The correct answer to this open question is the following.
Unfortunately, you forgot to attach the document "The Future of Money."
However, trying to help you with something, we can comment on the following based on our knowledge of the topic.
One important element to consider about digital money is that it has a limit, which means that the supply of digital money is fixed. It is in total opposition of fiat money that it can be printed once, twice, or as many times the central bank or the Fed decides to print new money.
As digital money is fixed, its scarcity provides it with a value that fiat money does not have. So this factor makes digital money have a value that attracts investors.
The problem with fiat money, the bills, and coins as we know it is that its real value depreciates with that new amount of bills printed by the government.
Another important factor as I mentioned above, is that digital money does not depend on the whims of the Fed or the central banks of the different governments of the world. This means that banks do not have any control of digital money as they control fiat money through deposits, transferences, or other transactions. You are the only owner of your digital money.